Initial checkin of lldb code from internal Apple repo.
git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@105619 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Target/ExecutionContext.cpp b/source/Target/ExecutionContext.cpp
new file mode 100644
index 0000000..e79f8c2
--- /dev/null
+++ b/source/Target/ExecutionContext.cpp
@@ -0,0 +1,107 @@
+//===-- ExecutionContext.cpp ------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//
+
+//
+//===----------------------------------------------------------------------===//
+
+
+#include "lldb/Target/ExecutionContext.h"
+#include "lldb/Target/ExecutionContextScope.h"
+#include "lldb/Target/StackFrame.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Target/Thread.h"
+
+using namespace lldb_private;
+
+ExecutionContext::ExecutionContext() :
+ target (NULL),
+ process (NULL),
+ thread (NULL),
+ frame (NULL)
+{
+}
+
+ExecutionContext::ExecutionContext (Target* t, bool fill_current_process_thread_frame) :
+ target (t),
+ process (NULL),
+ thread (NULL),
+ frame (NULL)
+{
+ if (t && fill_current_process_thread_frame)
+ {
+ process = t->GetProcessSP().get();
+ if (process)
+ {
+ thread = process->GetThreadList().GetCurrentThread().get();
+ if (thread)
+ frame = thread->GetCurrentFrame().get();
+ }
+ }
+}
+
+ExecutionContext::ExecutionContext(Process* p, Thread *t, StackFrame *f) :
+ target (p ? &p->GetTarget() : NULL),
+ process (p),
+ thread (t),
+ frame (f)
+{
+}
+
+ExecutionContext::ExecutionContext (ExecutionContextScope *exe_scope_ptr)
+{
+ if (exe_scope_ptr)
+ exe_scope_ptr->Calculate (*this);
+ else
+ {
+ target = NULL;
+ process = NULL;
+ thread = NULL;
+ frame = NULL;
+ }
+}
+
+ExecutionContext::ExecutionContext (ExecutionContextScope &exe_scope_ref)
+{
+ exe_scope_ref.Calculate (*this);
+}
+
+void
+ExecutionContext::Clear()
+{
+ target = NULL;
+ process = NULL;
+ thread = NULL;
+ frame = NULL;
+}
+
+
+RegisterContext *
+ExecutionContext::GetRegisterContext () const
+{
+ if (frame)
+ return frame->GetRegisterContext();
+ else if (thread)
+ return thread->GetRegisterContext();
+ return NULL;
+}
+
+ExecutionContextScope *
+ExecutionContext::GetBestExecutionContextScope () const
+{
+ if (frame)
+ return frame;
+ if (thread)
+ return thread;
+ if (process)
+ return process;
+ return target;
+}